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WO2019088130A1 - Poudre d'oxyde de zinc ainsi que procédé de fabrication de celui-ci, dispersion liquide, et cosmétique - Google Patents

Poudre d'oxyde de zinc ainsi que procédé de fabrication de celui-ci, dispersion liquide, et cosmétique Download PDF

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Publication number
WO2019088130A1
WO2019088130A1 PCT/JP2018/040401 JP2018040401W WO2019088130A1 WO 2019088130 A1 WO2019088130 A1 WO 2019088130A1 JP 2018040401 W JP2018040401 W JP 2018040401W WO 2019088130 A1 WO2019088130 A1 WO 2019088130A1
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Prior art keywords
zinc oxide
oxide powder
present
dispersion
mass
Prior art date
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PCT/JP2018/040401
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English (en)
Japanese (ja)
Inventor
俊輔 須磨
西田　健一郎
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Sumitomo Osaka Cement Co Ltd
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Sumitomo Osaka Cement Co Ltd
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Priority to JP2019550430A priority Critical patent/JP7173033B2/ja
Publication of WO2019088130A1 publication Critical patent/WO2019088130A1/fr
Anticipated expiration legal-status Critical
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/27—Zinc; Compounds thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
    • A61Q1/02—Preparations containing skin colorants, e.g. pigments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
    • A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G9/00—Compounds of zinc
    • C01G9/02—Oxides; Hydroxides

Definitions

  • the present invention relates to a zinc oxide powder, a dispersion, a cosmetic, and a method for producing zinc oxide powder.
  • Priority is claimed on Japanese Patent Application No. 2017-211195, filed Oct. 31, 2017, the content of which is incorporated herein by reference.
  • Zinc oxide powder has an ultraviolet shielding function, a gas permeation suppressing function, and the like, and also has high transparency. Therefore, they are used in applications requiring transparency, such as ultraviolet shielding films, ultraviolet shielding glasses, cosmetics, and gas barrier films (see, for example, Patent Documents 1 to 7).
  • zinc oxide powder can suppress spreading of sebum by solidifying sebum. For this reason, it is known that makeup collapse by sebum can be suppressed by using for foundation etc. (for example, refer to patent documents 8).
  • the present invention has been made in view of the above-mentioned circumstances, and zinc oxide powder capable of shortening the time for which sebum solidifies more than before, and dispersion liquid containing zinc oxide powder, cosmetics, and zinc oxide powder
  • the purpose is to provide a method of manufacturing the body.
  • S in the S—O bonded state of the zinc oxide powder measured by X-ray photoelectron spectroscopy is 0.1 atm% or more and 1.0 atm%. It is below.
  • the dispersion liquid which is the 2nd aspect of this invention contains the zinc oxide powder of the 1st aspect of this invention, and a dispersion medium.
  • the cosmetic according to the third aspect of the present invention comprises at least one selected from the group consisting of the zinc oxide powder of the first aspect of the present invention and the dispersion according to the second aspect of the present invention, and a cosmetic base And an agent raw material.
  • the method for producing zinc oxide powder according to the fourth aspect of the present invention comprises the steps of mixing zinc oxide powder and an aqueous solution containing SO 4 .
  • the proportion of S in the S—O bond state is 0.1 atm% or more and 1.0 atm% or less, which is measured by X-ray photoelectron spectroscopy.
  • the time required for solidification of sebum can be shortened.
  • the time required for solidification of sebum can be shortened.
  • the cosmetic of the third aspect of the present invention at least one selected from the group consisting of the zinc oxide powder of the first aspect of the present invention and the dispersion of the second aspect of the present invention, and cosmetics Since the base material is contained, makeup breakdown can be further suppressed.
  • zinc oxide powder excellent in sebum solidifying property can be produced.
  • the zinc oxide powder, the dispersion, the cosmetic and the method for producing the zinc oxide powder of the present embodiment which are preferable examples of the present invention, will be described below.
  • the following examples are specifically described for better understanding of the gist of the invention, and do not limit the present invention unless otherwise specified. Modifications, omissions, substitutions, additions, and other modifications are possible without departing from the spirit of the present invention.
  • Zinc oxide powder In the zinc oxide powder of the present embodiment, S in an S—O bond state measured by X-ray photoelectron spectroscopy is 0.1 atm% or more and 1.0 atm% or less. Due to this feature, the zinc oxide powder of the present embodiment can shorten the time required for solidification of sebum when used in cosmetics.
  • the present inventors have found that zinc oxide powder in which S in an S-O bond state measured by X-ray photoelectron spectroscopy is 0.1 atm% or more and 1.0 atm% or less can shorten the sebum solidification time.
  • a zinc oxide powder for example, an aqueous solution containing SO 4
  • the ratio (atomic percentage) of S in S—O bonded state obtained by measuring the zinc oxide powder (zinc oxide particles) of the present embodiment by X-ray photoelectron spectroscopy is 0.1 atm% or more and 1.0 atm % Or less and preferably 0.2 atm% or more and 0.9 atm% or less.
  • S is 0.1 atm% or more, sebum solidification time can be shortened.
  • S exceeds 1.0 atm%, the amount of impurities in the zinc oxide powder increases, which is not preferable.
  • the S-bonded state of S which is measured by X-ray photoelectron spectroscopy, can be obtained, for example, by the following method. Specifically, preferably using a scanning X-ray photoelectron spectroscopy (XPS: X-Ray Photoelectron Spectroscopy / ESCA: Electron Spectroscopy for Chemical) PHI 5000 (manufactured by ULVAC-PHI, Inc.), etc., preferably measure according to the following method. Can. In the measurement, AlK ⁇ (monochrome: 50 W, 15 kV) 1486.6 eV is used as an X-ray source. The analysis area is 0.4 ⁇ 0.4 mm 2 .
  • an appropriate amount of zinc oxide powder is fixed on an aluminum pan and introduced into a scanning X-ray photoelectron spectrometer.
  • qualitative analysis (performed with a wide spectrum) is performed on the surface of the zinc oxide powder. By scanning a wide energy range, it is possible to confirm to some extent what elements are present.
  • O is measured for O1s (525 eV to 540 eV).
  • Zn is measured for Zn2p (1015 eV to 1030 eV).
  • S is measured for S2p (160 eV to 175 eV).
  • C is measured for C1s (280 eV to 295 eV).
  • Qualitative analysis can be performed with binding energy values in an appropriate range, for example, 0 to 1100 eV.
  • the atomic concentration on the surface of the zinc oxide powder is calculated from the area of the peaks detected in the measurement range for the elements detected by qualitative analysis and S and C. We use ULVAC-PHI's handbook and relative sensitivity factors for state analysis and quantitative calculations.
  • the content of SO 4 in the zinc oxide powder is preferably 100 ppm or more and 10000 ppm or less.
  • SO 4 may be present in any state in zinc oxide powder or zinc oxide particles in the powder. For example, it may be on the surface only, or may be inside the particle as well as the surface. These states may be controlled by manufacturing conditions and the like.
  • SO 4 may be a part constituting a compound such as a sulfate, may be in an ionic state such as SO 4 2-, or may be bonded to a zinc atom or the like on the particle surface.
  • the content of the SO 4 is used in the preparation remained in or surface of the final product, the SO 4 in the molecular structure of the compounds such as sulfuric acid or sulfates, be a value attributed mainly good.
  • the content of SO 4 is in the above range, zinc oxide powder excellent in sebum solidifying property can be obtained.
  • the content of SO 4 in the zinc oxide powder can be measured by an ICP emission spectrometer.
  • zinc oxide particles are included, and further, zinc sulfate, beryllium sulfate, magnesium sulfate, calcium sulfate, on the surface, near the surface, and / or in the particles of the particles.
  • the sulfate is zinc sulfate, magnesium sulfate or calcium sulfate. It is also preferable that these powders have an SO 4 content of 100 ppm or more and 10000 ppm or less.
  • the content of SO 4 in the zinc oxide powder is 100 ppm or more and 10000 ppm or less
  • the zinc oxide powder contains the sulfate salt on the particle surface or in the vicinity of the surface And zinc oxide powder, wherein the sulfate contains SO 4 in the molecular structure, and the amount of SO 4 in the sulfate is included in the content of SO 4 in the zinc oxide powder.
  • the sulfate may be attributable to the material used to make the zinc oxide powder, such as the material used to make the aqueous solution containing SO 4 .
  • the zinc oxide powder of the present invention is not limited to only the zinc oxide powder of the above example.
  • the zinc oxide powder of the present embodiment preferably, the zinc oxide powder obtained by mixing the aqueous solution containing SO 4 and the zinc oxide powder as a raw material is obtained by measurement by X-ray photoelectron spectroscopy. Since S in the SO-bonded state to be treated is in the above range, the time required for the sebum to solidify can be shortened. However, the details of this mechanism are unknown. However, it is inferred as follows. When the aqueous solution containing SO 4 and the zinc oxide powder are mixed, SO 4 or a compound containing SO 4 is uniformly present on the surface of the zinc oxide powder.
  • the SO 4 in the aqueous solution may be contained in the aqueous solution as an ion such as SO 4 2- or may be contained as a part constituting a compound in the aqueous solution.
  • fatty acids mainly oleic acid
  • sebum components which are oil components causing makeup breakdown, are solidified among sebum components, while they are contained in emollient components in sebum and cosmetics. It is known that preference is given to oil components that do not solidify them (Fragrance Journal, December 2015, pages 42-46).
  • the zinc oxide powder of the present embodiment is excellent in the solidifying property of oleic acid, though the reason is not clear.
  • the zinc oxide powder of the present embodiment has solidifying properties for cyclopentasiloxane, tri (caprylic acid / capric acid) glyceryl, squalane, olive oil, etc. which are generally blended as oils in cosmetics. Do not have. That is, the zinc oxide powder of the present embodiment also has an effect of being able to selectively solidify a fatty acid (oleic acid).
  • the specific surface area of the zinc oxide powder of the present embodiment can be arbitrarily selected according to the required characteristics. For example, from the viewpoint of transparency, it is preferable that the specific surface area is less than 8m 2 / g or more and 65 m 2 / g, more preferably 15 m 2 / g or more and 60 m 2 / g or less, 20 m 2 / More preferably, it is g or more and 50 m 2 / g or less, and most preferably 25 m 2 / g or more and 45 m 2 / g or less. When the specific surface area of the zinc oxide powder is in the above range, the transparency of the dispersion containing the zinc oxide powder and cosmetics can be increased.
  • the feel of the zinc oxide powder is preferably 1 m 2 / g or more and 8m 2 / g, more preferably 2m 2 / g or more and 7m 2 / g or less, 3m More preferably, it is 2 / g or more and 7 m 2 / g or less.
  • the specific surface area of the zinc oxide powder is in the above range, the feel of a cosmetic containing this zinc oxide powder can be improved.
  • the specific surface area of the zinc oxide powder means a value measured by the BET method.
  • the apparatus used for measuring the specific surface area include a fully automatic specific surface area measuring apparatus (trade name: Macsorb HM Model-1201, manufactured by Mountech Co., Ltd.).
  • the method for producing zinc oxide powder of the present embodiment includes the step of mixing zinc oxide powder and an aqueous solution containing SO 4 .
  • zinc oxide powder it is preferable to use high purity zinc oxide powder used in cosmetics.
  • zinc oxide powder of high purity an increase in the amount of impurities in the zinc oxide powder can be suppressed.
  • the zinc oxide powder may be used after being washed with pure water or alcohol.
  • the aqueous solution containing SO 4 not particularly limited as long as it contains a SO 4.
  • An aqueous solution containing SO 4 can be obtained, for example, by dissolving a compound containing SO 4 in water.
  • a compound containing SO 4 for example, sulfuric acid or sulfate can be used alone or in combination of two or more.
  • the sulfate is not particularly limited, and examples thereof include zinc sulfate, beryllium sulfate, magnesium sulfate, calcium sulfate, strontium sulfate, barium sulfate, aluminum sulfate, cerium sulfate, sodium sulfate, potassium sulfate and ammonium sulfate. These sulfates contain SO 4 in the molecular structure. It is preferable to use zinc sulfate, magnesium sulfate, and calcium sulfate in that the sebum solidification time is further shortened.
  • the concentration of the aqueous solution containing SO 4 is such that S in the S—O bonded state of the resulting zinc oxide powder, as measured by X-ray photoelectron spectroscopy, within the range of solubility of sulfate, falls within the above range It may be adjusted and is not particularly limited.
  • an aqueous solution having a concentration of sulfate of 0.01% by mass or more and 50% by mass or less can be used.
  • the above-mentioned aqueous solution and zinc oxide powder as a raw material are prepared such that the mass ratio of zinc oxide and a compound containing SO 4 is in the range of 1: 0.001 to 1: 0.1. , Just mix it.
  • a method of mixing zinc oxide powder as a raw material and an aqueous solution containing SO 4 it is possible to use a method of mixing so that a compound containing SO 4 uniformly exists (adheres) on the surface of zinc oxide powder.
  • a compound containing SO 4 uniformly exists (adheres) on the surface of zinc oxide powder.
  • an aqueous solution containing SO 4 it may be stirred zinc oxide powder, spraying an aqueous solution containing SO 4 in the zinc oxide powder (particle) in a spray, stirring the zinc oxide powder in a Henschel mixer You may
  • the method for producing the zinc oxide powder of the present embodiment may further include the step of drying the zinc oxide powder after being mixed with the aqueous solution containing SO 4 .
  • the mixed zinc oxide powder may be naturally dried or may be dried at a temperature of 80 ° C. to 150 ° C. by a dryer.
  • the zinc oxide powder of the present embodiment can be produced by the above steps.
  • the compound containing SO 4 that may be present on the surface of the zinc oxide powder of the present embodiment is the same as the compound containing SO 4 that can be used for producing the zinc oxide powder of the present embodiment, It may be different.
  • zinc oxide powder and an aqueous solution containing SO 4 were mixed.
  • the method for producing the zinc oxide powder of the present embodiment is not limited to this.
  • a compound containing SO 4 may be present (adhered) on the surface of zinc oxide powder (zinc oxide particles). Therefore, at some stage of the manufacturing process of the zinc oxide powder of interest, a SO 4, i.e. a compound containing SO 4 in the structure and / or a material containing SO 4 ions to form zinc oxide powder It is speculated that the ingredients may be mixed. Therefore, when producing zinc oxide powder by a vapor phase method, it is speculated that the zinc oxide powder of the present embodiment can be obtained by mixing a gas containing SO 4 and a gas containing zinc.
  • a raw material (zinc oxalate, zinc hydroxide, zinc carbonate, basic zinc carbonate, etc.) of zinc oxide powder and an aqueous solution containing SO 4 are mixed. By doing this, it is presumed that the zinc oxide powder of the present embodiment can be obtained.
  • the method for producing the zinc oxide powder of the present embodiment when used in a cosmetic, it is possible to produce a zinc oxide powder having excellent sebum solidifying properties.
  • At least a part of the surface of the zinc oxide powder of the present embodiment may be surface-treated with at least one of an inorganic component and an organic component.
  • the atomic concentration of S in the S—O bonded state of the at least partially surface-treated zinc oxide powder is within the above range. It is preferable to add a step of the surface treatment after the process of mixing the aqueous solution containing zinc oxide powder and SO 4 as a raw material.
  • the zinc oxide powder thus surface-treated with at least one of the inorganic component and the organic component is referred to as a surface-treated zinc oxide powder.
  • the surface-treated zinc oxide powder can further suppress the surface activity of zinc oxide, and can improve the dispersibility in the dispersion medium.
  • An inorganic component and an organic component are suitably selected according to the use of zinc oxide powder.
  • the inorganic component and the organic component used for the surface treatment are not particularly limited.
  • the surface treatment agent generally used for cosmetics is mentioned.
  • the inorganic component include silica, alumina and the like.
  • One of these inorganic components may be used alone, or two or more thereof may be used in combination.
  • organic component examples include silicone compounds, organopolysiloxanes, fatty acids, fatty acid soaps, fatty acid esters, polyolefins, N-acyl amino acids or salts thereof, N-acyl-N-alkyl amino acids or salts thereof, hydrogenated lecithin or salts thereof And at least one selected from the group consisting of organic titanate compounds.
  • One of these organic components may be used alone, or two or more of these organic components may be used in combination.
  • surfactant as an inorganic component and an organic component.
  • zinc oxide powder is surface-treated using at least one selected from such inorganic components and organic components, the surface activity of zinc oxide is suppressed, or the zinc oxide powder is dispersed in a dispersion medium. It is possible to improve the
  • silicone compounds used for surface treatment include silicone oils such as methylhydrogenpolysiloxane, dimethylpolysiloxane and methylphenylpolysiloxane; methyltrimethoxysilane, ethyltrimethoxysilane, hexyltrimethoxysilane, octyltrimethoxysilane Alkylsilanes such as octyltriethoxysilane; fluoroalkylsilanes such as trifluoromethylethyltrimethoxysilane and heptadecafluorodecyltrimethoxysilane; methicone, dimethicone, hydrogen dimethicone, triethoxysilylethyl polydimethylsiloxyethyl dimethicone, triethoxy Silylethyl polydimethylsiloxyethyl hexyl dimethicone, (acreates / tride
  • silicone compounds may be used alone, or two or more thereof may be used in combination. Moreover, as a silicone compound, you may use the copolymer of these silicone compounds. Among these silicone compounds, methicone, dimethicone and hydrogen dimethicone are preferable, and hydrogen dimethicone is particularly preferable, from the viewpoint of hardly inhibiting the sebum solidifying property of zinc oxide powder.
  • the example of the organic component is further described.
  • the fatty acid include palmitic acid, isostearic acid, stearic acid, lauric acid, myristic acid, behenic acid, oleic acid, rosin acid, 12-hydroxystearic acid, polyhydroxystearic acid and the like.
  • fatty acid soaps include aluminum stearate, calcium stearate, aluminum 12-hydroxystearate and the like.
  • the fatty acid ester include dextrin fatty acid ester, cholesterol fatty acid ester, sucrose fatty acid ester, starch fatty acid ester and the like.
  • N-acyl amino acids examples include N-lauroyl glutamic acid, N-myristoyl glutamic acid, N-palmitoyl glutamic acid, N-cocoyl glutamic acid, N-lauroyl lysine, N-stearoyl glutamic acid, dilauroyl glutamic acid lysine and the like.
  • salts of N-acyl amino acids sodium salts, potassium salts, magnesium salts, calcium salts, aluminum salts, zinc salts of N-acyl amino acids and the like can be mentioned.
  • a gemini amphiphilic amino acid including an N-acyl amino acid salt such as lysine sodium dilauroyl glutamate may be used.
  • organic titanate compound for example, isopropyl triisostearoyl titanate, isopropyl dimethacryl isostearoyl titanate, isopropyl tri (dodecyl) benzene sulfonyl titanate, neopentyl (diallyl) oxy-tri (dioctyl) phosphate titanate, neopentyl (diallyl) oxy- trineododeca Noyl titanate etc. are mentioned.
  • the surface-treated zinc oxide powder of the present embodiment is used in industrial applications such as a UV shielding film or a gas barrier film, particles are dispersed in addition to or instead of the inorganic component and the organic component used in the cosmetic.
  • a common dispersant used in the process can be appropriately selected and used.
  • a dispersing agent an anionic dispersing agent, a cationic dispersing agent, a nonionic dispersing agent, a silane coupling agent, a wetting dispersing agent etc. are mentioned, for example.
  • the method for producing the surface-treated zinc oxide powder is not particularly limited, and may be appropriately carried out by a known method according to the components used for the surface treatment.
  • the dispersion liquid of the present embodiment contains the zinc oxide powder of the present embodiment and a dispersion medium.
  • the zinc oxide powder may be surface-treated zinc oxide powder.
  • the dispersion liquid of the present embodiment can shorten the time required for solidification of sebum.
  • the dispersion liquid of the present embodiment may be a paste-like dispersion having a high viscosity.
  • the content of the zinc oxide powder in the dispersion may be appropriately adjusted in accordance with the desired characteristics.
  • content of the zinc oxide powder in a dispersion liquid can be selected arbitrarily.
  • the content is preferably 30% by mass to 90% by mass, more preferably 40% by mass to 85% by mass, and still more preferably 50% by mass to 80% by mass.
  • the content of the zinc oxide powder in the dispersion for example, by setting the content in the range of 30% by mass to 90% by mass, the zinc oxide powder is contained in the dispersion at a high concentration it can. Therefore, the degree of freedom in formulation can be improved, and the viscosity of the dispersion can be made easy to handle.
  • content of a zinc oxide powder is not limited only to the said range.
  • 10 mass%, 20 mass%, 40 mass%, 60 mass% etc. can be mentioned preferably.
  • 95 mass%, 90 mass%, 85 mass%, 75 mass% etc. can be mentioned preferably.
  • the viscosity of the dispersion of the present embodiment can be selected arbitrarily. For example, it is preferably 5 Pa ⁇ s or more and 300 Pa ⁇ s or less, more preferably 8 Pa ⁇ s or more and 100 Pa ⁇ s or less, still more preferably 10 Pa ⁇ s or more and 80 Pa ⁇ s or less, 15 Pa It is most preferable that s or more and 60 Pa ⁇ s or less.
  • a dispersion which is easy to handle can be obtained, even when the solid content (zinc oxide powder) is contained at a high concentration.
  • the dispersion medium contained in the dispersion liquid is appropriately selected according to the application of the dispersion liquid.
  • suitable dispersion media are exemplified below, the dispersion media in the dispersion are not limited to these.
  • the dispersion medium for example, alcohols such as water, methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, octanol, glycerin and the like; ethyl acetate, butyl acetate, ethyl lactate, propylene glycol monomethyl ether Esters such as acetate, propylene glycol monoethyl ether acetate and ⁇ -butyrolactone; diethyl ether, ethylene glycol monomethyl ether (methyl cellosolve), ethylene glycol monoethyl ether (ethyl cellosolve), ethylene glycol monobutyl ether (butyl cellosolve), diethylene glycol mono
  • ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, acetylacetone, cyclohexanone and the like; aromatic hydrocarbons such as benzene, toluene, xylene, ethylbenzene and the like; cyclic hydrocarbons such as cyclohexane; And amides such as N-dimethylacetoacetamide and N-methylpyrrolidone; linear polysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane and diphenylpolysiloxane; and the like.
  • One of these dispersion media may be used alone, or two or more thereof may be mixed and used.
  • cyclic polysiloxanes such as octamethyl cyclotetrasiloxane, decamethyl cyclopentasiloxane, dodecamethyl cyclohexane siloxane, etc .; amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, fluorine-modified Modified polysiloxanes such as polysiloxane are used.
  • One of these dispersion media may be used alone, or two or more thereof may be mixed and used.
  • a hydrophobic dispersion medium such as a higher alcohol such as stearyl alcohol may be used.
  • One of these dispersion media may be used alone, or two or more thereof may be mixed and used.
  • the above-mentioned dispersion media can be used in any combination according to the required properties.
  • the amount of the dispersion medium can be arbitrarily selected, but for example, it is generally 5% by mass or more and 90% by mass or less, preferably 10% by mass or more and 70% by mass or less based on the total amount of the dispersion. More preferably, it is 15% by mass or more and 60% by mass or less.
  • the dispersion of the present embodiment may contain commonly used additives as long as the properties of the dispersion are not impaired.
  • the additive for example, a dispersant, a stabilizer, a water soluble binder, a thickener, an oil soluble preservative, a UV absorber, an oil soluble drug, an oil soluble pigment, an oil soluble protein, a vegetable oil, an animal oil etc.
  • the The amount of each additive can be selected arbitrarily, but for example, it is generally 0.1% by mass or more and 80% by mass or less, preferably 0.5% by mass or more and 50% by mass with respect to the total amount of the dispersion. % Or less, more preferably 1% by mass or more and 40% by mass or less. As another example, if necessary, it may be 0.1 to 2% by mass, 2 to 5% by mass, or 5 to 10% by mass.
  • the method for producing the dispersion is not particularly limited.
  • a method of mechanically dispersing zinc oxide powder and a dispersion medium with a known dispersing device can be mentioned.
  • a dispersion apparatus a stirrer, a self-revolution type
  • the dispersion liquid of the present embodiment can be used for a composition having an ultraviolet shielding function, a gas permeation suppressing function, and the like other than cosmetics.
  • the time required for solidification of sebum can be shortened when used for cosmetics.
  • the cosmetic of the present embodiment contains at least one selected from the group consisting of the zinc oxide powder of the present embodiment and the dispersion of the present embodiment, and a cosmetic base material.
  • the cosmetic of the present embodiment can contain the zinc oxide powder of the present embodiment, a cosmetic base material, and, if necessary, a dispersion medium.
  • the cosmetic of the present embodiment can suppress makeup collapse.
  • the cosmetic base material means various raw materials forming the main body of the cosmetic, and can be selected arbitrarily.
  • cosmetic base materials include oily materials, aqueous materials, surfactants, and powder materials. These can be used in combination as needed.
  • oils and oils As an oil-based raw material, fats and oils, higher fatty acids, higher alcohols, ester oils etc. are mentioned, for example.
  • aqueous material examples include purified water, alcohol, thickener and the like.
  • a powder raw material a colored pigment, a white pigment, a pearlescent agent, an extender pigment etc. are mentioned, for example.
  • the cosmetic of the present embodiment mixes the zinc oxide powder or the dispersion of the present embodiment with cosmetic base materials such as milk, cream, foundation, lipstick, blush, and eye shadow by a known method.
  • cosmetic base materials such as milk, cream, foundation, lipstick, blush, and eye shadow.
  • the cosmetic may be prepared by blending the zinc oxide powder of the present embodiment in an oil phase or an aqueous phase, as an O / W type or W / O type emulsion, and then blending with a cosmetic base material. Can also be obtained.
  • the content of the zinc oxide powder in the cosmetic of the present embodiment may be appropriately adjusted according to the desired characteristics.
  • the lower limit of the content of the zinc oxide powder may be 0.01% by mass or more, 0.1% by mass or more, or 1% by mass or more.
  • the upper limit of the content of the zinc oxide powder may be 50% by mass or less, 40% by mass or less, or 30% by mass or less. 20 mass% or less, 10 mass% or less, 5 mass% or less may be sufficient.
  • the cosmetic of the present embodiment contains at least one selected from the group consisting of the zinc oxide powder of the present embodiment and the dispersion of the present embodiment, and a cosmetic base material, so that the cosmetic collapse is caused. Can be further suppressed.
  • Example 1 30 g of zinc oxide powder A (Sumitomo Osaka Cement, BET specific surface area 45.1 m 2 / g) was added to 150 g of an aqueous solution containing 0.3 mass% zinc sulfate (ZnSO 4 ), and the mixture was stirred for 30 minutes. The mixed solution was subjected to solid-liquid separation by centrifugation, and the obtained zinc oxide powder was dried at 105 ° C. for 3 hours to obtain the zinc oxide powder of Example 1.
  • ZnSO 4 0.3 mass% zinc sulfate
  • the amount of S present on the surface of the zinc oxide powder of Example 1 was measured by the following method using a scanning X-ray photoelectron spectrometer PHI5000 (manufactured by ULVAC-PHI, Inc.). In the measurement, AlK ⁇ (monochrome: 50 W, 15 kV) 1486.6 eV was used as an X-ray source. The analysis area was 0.4 ⁇ 0.4 mm 2 . The zinc oxide powder was fixed to a pan made of aluminum and introduced into a scanning X-ray photoelectron spectrometer. Next, qualitative analysis (wide spectrum) of the zinc oxide powder was performed.
  • state analysis is performed for the element (O, Zn) detected by qualitative analysis, the element (S) to be measured, and the reference element (C), and the peak area of the spectrum obtained for these
  • the surface atomic concentration was calculated from Since C and S have low intensities, energy resolution was lowered and sensitivity was prioritized.
  • O was measured for O1s (525 eV to 540 eV).
  • Zn was measured for Zn2p (1015 eV to 1030 eV).
  • S was measured for S2p (160 eV to 175 eV).
  • C was measured for C1s (280 eV to 295 eV).
  • the amount of SO 4 contained in the zinc oxide powder of Example 1 was measured by the following method using an ICP emission spectrometer ICP-AES 700-ES (manufactured by Varian). 0.5 g of the zinc oxide powder of Example 1 was weighed into a 200 mL beaker. Subsequently, 50 mL of pure water and 5 mL of 60 mass% concentrated nitric acid were added to a beaker containing this zinc oxide powder, and the mixture was stirred to dissolve the zinc oxide powder of Example 1. This solution was adjusted to 200 mL with pure water using a volumetric flask. This solution was diluted twice to prepare a test solution. To this test solution, 1000 ppm of Y (yttrium) was added as an internal standard substance.
  • a calibration curve was prepared using an elemental standard solution of known concentration.
  • 1000 ppm of Y as an internal standard substance and nitric acid were added to the elemental standard solution for preparing a calibration curve so as to have the same concentration as the test solution.
  • the test solution was measured by an ICP emission spectrophotometer and quantified by a calibration curve method.
  • the amount of SO 4 contained in the zinc oxide powder was 0.64 mass% (6400 ppm). The results are shown in Table 2.
  • An artificial sebum was prepared by mixing 10 g of oleic acid (manufactured by Kanto Chemical Co., Ltd.), 10 g of squalane (manufactured by Kanto Chemical Co., Ltd.), and 10 g of olive oil (trade name: EX virgin oil, manufactured by BOSCO).
  • Example 1 0.5 g of the zinc oxide powder of Example 1 and 4 g of artificial sebum were mixed and stirred by a stirrer. In the state of stirring, the time from the end of the stirring to the solidification of the artificial sebum was measured to evaluate the sebum solidifying property. As a result, the zinc oxide powder of Example 1 solidified in 5 seconds.
  • Example 2 The zinc oxide powder of Example 2 was obtained in the same manner as Example 1, except that the concentration of the aqueous solution containing ZnSO 4 was changed to 0.2% by mass. As a result of evaluation in the same manner as in Example 1, the amount of S in the S—O bonded state present on the surface of the zinc oxide powder was 0.4 atm%. The amount of SO 4 contained in the zinc oxide powder was 0.42% by mass (4200 ppm). The time required for the sebum to solidify was 2 minutes and 30 seconds. The results are shown in Tables 1 and 2.
  • Comparative Example 1 30 g of zinc oxide powder A and 0.45 g of ZnSO 4 (powder) were mixed in a mortar. That is, the powders were simply mixed to prepare a sample. The obtained mixture was evaluated in the same manner as in Example 1. As a result, the amount of S in the S—O bonded state present on the surface of the zinc oxide powder was below the detection limit ( ⁇ 0.1 atm%). The amount of SO 4 contained in the zinc oxide powder was 0.68% by mass (6800 ppm). Moreover, the time required for sebum solidification was 30 minutes. The results are shown in Tables 1 and 2.
  • the zinc oxide powder A was used as the zinc oxide powder of Comparative Example 2. That is, untreated zinc oxide powder A itself was used as a sample. As a result of evaluation in the same manner as in Example 1, the amount of S present on the surface of the zinc oxide powder was below the detection limit ( ⁇ 0.1 atm%). The amount of SO 4 in the SO-bonded state contained in the zinc oxide powder was 0.005% by mass (50 ppm). As a result of measuring the time required for sebum solidification as in Example 1, the sebum was not solidified even after 30 minutes. The results are shown in Table 2.
  • Reference Example 2 The zinc oxide powder of Reference Example 2 was obtained in the same manner as Reference Example 1 except that CaSO 4 was changed to MgSO 4 .
  • Reference Example 3 The zinc oxide powder of Reference Example 3 was obtained in the same manner as in Reference Example 1 except that CaSO 4 was changed to Na 2 SO 4 .
  • Reference Example 4 The zinc oxide powder of Reference Example 4 was obtained in the same manner as in Reference Example 1 except that CaSO 4 was changed to CaCl 2 .
  • Reference Example 5 The zinc oxide powder of Reference Example 5 was obtained in the same manner as Reference Example 1 except that CaSO 4 was changed to MgCl 2 .
  • the sebum solidification property was evaluated in the same manner as Example 1. If the solidification time is 5 minutes or less, “ ⁇ " (excellent), if the solidification time is more than 5 minutes to 20 minutes or less, “ ⁇ " (good), the solidification time exceeds 20 minutes to 30 minutes or less In the case where the solidification time was more than 30 minutes, it was evaluated as "poor". The shorter the setting time, the better the sebum setting property.
  • the present invention can provide a zinc oxide powder capable of shortening the time for which sebum solidifies, a dispersion containing zinc oxide powder, a cosmetic, and a method for producing zinc oxide powder.

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Abstract

L'invention concerne une poudre d'oxyde de zinc dans laquelle S à l'état de liaison Ｓ－Ｏ dans cette poudre d'oxyde de zinc, mesuré par spectroscopie de photoélectrons X, est supérieur ou égal à ０,１％ａｔｍ et inférieur ou égal à １,０％ａｔｍ.
PCT/JP2018/040401 2017-10-31 2018-10-30 Poudre d'oxyde de zinc ainsi que procédé de fabrication de celui-ci, dispersion liquide, et cosmétique Ceased WO2019088130A1 (fr)

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Publication number Priority date Publication date Assignee Title
WO2022075030A1 (fr) * 2020-10-08 2022-04-14 Dic株式会社 Composition de résine, objet moulé, produit stratifié, matériau barrière aux gaz, matériau de revêtement et adhésif
JPWO2022114169A1 (fr) * 2020-11-30 2022-06-02
US20230263708A1 (en) * 2020-04-30 2023-08-24 Sumitomo Osaka Cement Co., Ltd. Surface-modified zinc oxide particles, dispersion solution, and cosmetic

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JPS5445795A (en) * 1977-09-17 1979-04-11 Murata Manufacturing Co Piezooelectric crystalline membrane of zinc oxide
JPH0350119A (ja) * 1989-07-19 1991-03-04 Mitsubishi Materials Corp 微粒子酸化亜鉛の製造方法
JPH07118133A (ja) * 1993-10-20 1995-05-09 Sakai Chem Ind Co Ltd 化粧料用酸化亜鉛及び製造方法
JP2001058821A (ja) * 1999-05-12 2001-03-06 Sakai Chem Ind Co Ltd 表面活性を抑制した酸化亜鉛粒子及びその製造と利用
WO2005033355A1 (fr) * 2003-09-30 2005-04-14 Nikko Materials Co., Ltd. Poudre d'oxyde de zinc haute purete et procede de fabrication correspondant ainsi que cible en oxyde de zinc haute purete et film mince d'oxyde de zinc haute purete
US20100086455A1 (en) * 2007-05-07 2010-04-08 Kevin Clais Metohd of producing oxide and power thus obtained
WO2015072499A1 (fr) * 2013-11-13 2015-05-21 住友大阪セメント株式会社 Oxyde de zinc enrobé d'oxyde de silicium et son procédé de fabrication, composition contenant de l'oxyde de zinc enrobé d'oxyde de silicium, et produit cosmétique
JP2017145155A (ja) * 2016-02-15 2017-08-24 石原産業株式会社 酸化亜鉛粒子及びその製造方法並びにその用途

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Publication number Priority date Publication date Assignee Title
US3897248A (en) * 1972-05-05 1975-07-29 Zochem Ltd Production of photoconductive zinc oxide
JPS5445795A (en) * 1977-09-17 1979-04-11 Murata Manufacturing Co Piezooelectric crystalline membrane of zinc oxide
JPH0350119A (ja) * 1989-07-19 1991-03-04 Mitsubishi Materials Corp 微粒子酸化亜鉛の製造方法
JPH07118133A (ja) * 1993-10-20 1995-05-09 Sakai Chem Ind Co Ltd 化粧料用酸化亜鉛及び製造方法
JP2001058821A (ja) * 1999-05-12 2001-03-06 Sakai Chem Ind Co Ltd 表面活性を抑制した酸化亜鉛粒子及びその製造と利用
WO2005033355A1 (fr) * 2003-09-30 2005-04-14 Nikko Materials Co., Ltd. Poudre d'oxyde de zinc haute purete et procede de fabrication correspondant ainsi que cible en oxyde de zinc haute purete et film mince d'oxyde de zinc haute purete
US20100086455A1 (en) * 2007-05-07 2010-04-08 Kevin Clais Metohd of producing oxide and power thus obtained
WO2015072499A1 (fr) * 2013-11-13 2015-05-21 住友大阪セメント株式会社 Oxyde de zinc enrobé d'oxyde de silicium et son procédé de fabrication, composition contenant de l'oxyde de zinc enrobé d'oxyde de silicium, et produit cosmétique
JP2017145155A (ja) * 2016-02-15 2017-08-24 石原産業株式会社 酸化亜鉛粒子及びその製造方法並びにその用途

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230263708A1 (en) * 2020-04-30 2023-08-24 Sumitomo Osaka Cement Co., Ltd. Surface-modified zinc oxide particles, dispersion solution, and cosmetic
WO2022075030A1 (fr) * 2020-10-08 2022-04-14 Dic株式会社 Composition de résine, objet moulé, produit stratifié, matériau barrière aux gaz, matériau de revêtement et adhésif
JPWO2022114169A1 (fr) * 2020-11-30 2022-06-02

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